Fastening grillages



[uvenZ r Patented Oct. 15, 1889.

R. HUNT. FASTENING GRILLAGES, PLATFORMS, 0R FOUNDATIONS 0F 'STRUGTURES T0 FILES OR OTHER MATERIALS (No Model.)

Wzlfuesses UNITED STATES PATENT OFFICE.

RANDELL HUNT, OF SAN FRANCISCO, CALIFORNIA.

FASTENING GRILLAGES, PLATFORMS, 0R FOUNDATIONS OF STRUCTURES TO PILES OR OTHER MATERIALS.

SPECIFICATION forming part of Letters Patent No. 412,757, dated October 15, 1889.

Application filed October 31, 1888. Renewed Augnst 30, 1889. Serial No. 322,412. (No model.)

To aZZ whom it may concern.-

Be it known that I, RANDELL HUNT, of the city of San Francisco, in the, county of San Francisco and State of California, have invented a new and useful Device to Permit the Fastening of Grillages, Platforms, or Foun dations of Structures to Piles or other Materials, which device is fully set forth in the following specification, reference being had to the accompanying drawing, which is a section of a structure with my invention applied.

The object of my invention is to drive spikes, bolts, nails, or screws through a timber grillage or platform B undera concrete or other masonry pier, wall, or other structure C, in combination with an iron or other metal tube or pipe A, which is fastened to the aforesaid grillage, and around'which the concrete or other masonry is constructed. Inside of the aforementioned tube A, which is surrounded by the masonry or other structure C, a bolt, spike, screw, or nail D is placed and driven through the platform or grillage B into the piles E, or into any other material other than piles which may exist under the platform or grillage B.

It is obvious from the drawing that the platform or grillage B may form the bottom of a caisson or other floating vessel, the sides of which are shown by F, inside which the masonry may be deposited until the aforesaid platform or grillage B rests on the piles E, and the tubes or pipes A project up through the masonry or other structure C, and through which the bolts, screws, nails, or spikes D are forced down into the piles E. The spikes or nails may be driven by inserting an iron or steel rod inside the tubes until itrests upon the top of said spikes or nails and hammering upon the rod with a sledge or other hammer.

I claim as my invention- As a means of enabling spikes or the like to be driven into the foundations of masonry, the combination of metal tubes with masonry built upon a supporting-platform, all substantially as shown and described.

RANDELL HUNT.

Witnesses:

HENRY NIEBERDING, W. C. WHITEHEAD. 

